QSystemTrayIcon hide() crash on mac while I use QTimer to change the icon of QSystemTrayIcon

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strange , when I edit it , the format looks well , but why when I post , it is so ugly .

koahnig

[quote author="brucewuu" date="1309868142"]@//! [6]

void Window::messageClicked()
{
QMessageBox::information(0, tr("Systray"),
tr("Sorry, I already gave what help I could.n"
"Maybe you should try asking a human?"));
}

//! [6]

void Window::createIconGroupBox()
{
iconGroupBox = new QGroupBox(tr("Tray Icon"));

iconLabel = new QLabel("Icon:");

iconComboBox = new QComboBox;
iconComboBox->addItem(QIcon(":/images/bad.svg"), tr("Bad"));
iconComboBox->addItem(QIcon(":/images/heart.svg"), tr("Heart"));
iconComboBox->addItem(QIcon(":/images/trash.svg"), tr("Trash"));

showIconCheckBox = new QCheckBox(tr("Show icon"));
showIconCheckBox->setChecked(true);

QHBoxLayout *iconLayout = new QHBoxLayout;
iconLayout->addWidget(iconLabel);
iconLayout->addWidget(iconComboBox);
iconLayout->addStretch();
iconLayout->addWidget(showIconCheckBox);
iconGroupBox->setLayout(iconLayout);

}

void Window::createMessageGroupBox()
{
messageGroupBox = new QGroupBox(tr("Balloon Message"));

typeLabel = new QLabel(tr("Type:"));

typeComboBox = new QComboBox;
typeComboBox->addItem(tr("None"), QSystemTrayIcon::NoIcon);
typeComboBox->addItem(style()->standardIcon(
        QStyle::SP_MessageBoxInformation), tr("Information"),
        QSystemTrayIcon::Information);
typeComboBox->addItem(style()->standardIcon(
        QStyle::SP_MessageBoxWarning), tr("Warning"),
        QSystemTrayIcon::Warning);
typeComboBox->addItem(style()->standardIcon(
        QStyle::SP_MessageBoxCritical), tr("Critical"),
        QSystemTrayIcon::Critical);
typeComboBox->setCurrentIndex(1);

durationLabel = new QLabel(tr("Duration:"));

durationSpinBox = new QSpinBox;
durationSpinBox->setRange(5, 60);
durationSpinBox->setSuffix(" s");
durationSpinBox->setValue(15);

durationWarningLabel = new QLabel(tr("(some systems might ignore this "
                                     "hint)"));
durationWarningLabel->setIndent(10);

titleLabel = new QLabel(tr("Title:"));

titleEdit = new QLineEdit(tr("Cannot connect to network"));

bodyLabel = new QLabel(tr("Body:"));

bodyEdit = new QTextEdit;
bodyEdit->setPlainText(tr("Don't believe me. Honestly, I don't have a "
                          "clue.nClick this balloon for details."));

showMessageButton = new QPushButton(tr("Show Message"));
showMessageButton->setDefault(true);

QGridLayout *messageLayout = new QGridLayout;
messageLayout->addWidget(typeLabel, 0, 0);
messageLayout->addWidget(typeComboBox, 0, 1, 1, 2);
messageLayout->addWidget(durationLabel, 1, 0);
messageLayout->addWidget(durationSpinBox, 1, 1);
messageLayout->addWidget(durationWarningLabel, 1, 2, 1, 3);
messageLayout->addWidget(titleLabel, 2, 0);
messageLayout->addWidget(titleEdit, 2, 1, 1, 4);
messageLayout->addWidget(bodyLabel, 3, 0);
messageLayout->addWidget(bodyEdit, 3, 1, 2, 4);
messageLayout->addWidget(showMessageButton, 5, 4);
messageLayout->setColumnStretch(3, 1);
messageLayout->setRowStretch(4, 1);
messageGroupBox->setLayout(messageLayout);

}

void Window::createActions()
{
minimizeAction = new QAction(tr("Mi&nimize"), this);
connect(minimizeAction, SIGNAL(triggered()), this, SLOT(hide()));

maximizeAction = new QAction(tr("Ma&ximize"), this);
connect(maximizeAction, SIGNAL(triggered()), this, SLOT(showMaximized()));

restoreAction = new QAction(tr("&Restore"), this);
connect(restoreAction, SIGNAL(triggered()), this, SLOT(showNormal()));

quitAction = new QAction(tr("&Quit"), this);
connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));

}

void Window::createTrayIcon()
{
trayIconMenu = new QMenu(this);
trayIconMenu->addAction(minimizeAction);
trayIconMenu->addAction(maximizeAction);
trayIconMenu->addAction(restoreAction);
trayIconMenu->addSeparator();
trayIconMenu->addAction(quitAction);

trayIcon = new QSystemTrayIcon(this);
trayIcon->setContextMenu(trayIconMenu);

}
@
is this a qt bug ? or something I did wrong somewhere[/quote]

koahnig

If you start and end your code section in your post with an 'at' sign ('@') it will look much nicer. That is what the others are asking for.

I have just added in the post above these two signs in the begin at the end. And voila it looks much better.

Sorry, had to do two posts ;-)

Eddy

there is a wiki page explaining how the editor works :
"Using the editor :":http://developer.qt.nokia.com/wiki/ForumHelp#9bd9c32b79efb1b2d5b039e4d48300a9

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ok , guys , thanks very much , I have changed them now ~~anyone could give me solution ?thanks

? Offline

It may be caused by some internal objects that are no longer available after you hide the icon. I can reproduce the crash on my Mac box.

As a workaround you can replace the call to hide with a single shot timer in your slot like this

@
fSystemTrayTimer->stop() ;
//fSystemTrayIcon->hide();
QTimer::singleShot(0, fSystemTrayIcon, SLOT(hide()));
@

This way the call to hide is delivered after you have left the slot.

EDIT:
I've added this as a doc not to [[Doc:QSystemTrayIcon]] too.

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thanks Volker , you are always the best problem solver for me . Great Appreciation ~~~

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hi Volker , I also meet the same problem as the following link
http://svn.netlabs.org/qt4/ticket/201
do you have some solution for that ?thanks ~~

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I'll have a look into this later.

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thanks very much , I have read the guide to ask questions , it is very helpful for me , thank you very much , I　will do this better ~~

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I didn't forget you but I was terribly busy the last week and am off for vacation soon, so please be a bit more patient.

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thanks Volker ~~just have a look when you have time , thanks

? Offline

[quote author="brucewuu" date="1309959197"]hi Volker , I also meet the same problem as the following link
http://svn.netlabs.org/qt4/ticket/201
do you have some solution for that ?thanks ~~[/quote]

That's out of scope for me. I don't know the internal workings for the OS/2 port, sorry.